Rust Operating System

An attempt at a simple operating system in Rust and a semester project for the Operating Systems course at CS@UCU.

We are also developing a tag filesystem as our primary FS.

Documentation

You can do a cargo doc --open to see automatically generated documentation from the Rust code.

Pre-requirements

• Properly set-up Rust. We are using nightly, so check that you have that too by running rustc --version --verbose in the cloned project directory. Try rustup override set nightly if it's not nightly.
• Install QEMU since we are using it to run our operating system

Usage

Running the project for the first time will require rebuilding the core library for our custom target, so it can take some time.

make
make run

Current progress

• Operating system (written in Rust) is booted after a short assembly script (boot.asm) checks the bootloader and switches to the long mode.
• Operating system can handle panics, can write to the hardcoded VGA buffer.
• The bootloader set ups recursive page mappings, and the OS can use a simple area frame allocator to map new pages.
• Rust receives the page tables and sets up internal stuctures to operate with them.
• Interrupts are handled, and keyboard interrupts also have proper debugging prints.
• OS can allocate and deallocate new pages with a buddy allocator, all on a recursively mapped page tables.
• OS can launch processes and switch between them with a simple algorithm.
• A few basic syscalls are already implemented and more are in development
• A user-space command interpreter has been implemented